very similar to the first game, hexa turn (my review can be found here), down to the sad fact that you can't deselect powerups, use them or use undo, but with enough new mechanics on top of the 'now the ai's trying to stop you' switcheroo to feel fresh, and of course some levels are pretty tricky again. there's also a move counter now, ideally you'd solve levels within those limits, but as long as you or the goals don't get blocked in, you can keep trying, and if you succeed, the next level opens up. if you liked the first game, it's a no-brainer, if you like hex-based puzzle games in general, ditto.